Come on guys... can we get a grip?

It's laziness... plain and simple... exteriors of buildings simply are not cleaned like in US or Europe... it's not priority. The Equator has nothing to do with it...and some of the harshest elements outside the north pole is tropical humid weather i.e. the Caribbean, Florida, etc... and in those areas, good managed buildings are maintained. I think in Brazil and all LA, it's simply complacency. Next time you invest, think about how well your building will be maintained.

These buildings are in the best areas of a major city in Brazil....